TypeDefinitionRegistry registry = new SchemaParser().parse("type Query { f : String }");
        RuntimeWiring runtimeWiring = RuntimeWiring.MOCKED_WIRING;
        GraphQLSchema graphQLSchema = new SchemaGenerator().makeExecutableSchema(registry, runtimeWiring);

        GraphQL graphQL = GraphQL.newGraphQL(graphQLSchema).build();

        for (int i = 1; i <= 5; i++) {
            //TIP Press <shortcut actionId="Debug"/> to start debugging your code. We have set one <icon src="AllIcons.Debugger.Db_set_breakpoint"/> breakpoint
            // for you, but you can always add more by pressing <shortcut actionId="ToggleLineBreakpoint"/>.
            ExecutionInput ei = ExecutionInput.newExecutionInput().query("query q { f }").root(Map.of("f", "F")).build();
            ExecutionResult er = graphQL.execute(ei);
            System.out.println("i" + i + "data :  " + er.getData() + " : errors : " + er.getErrors());
        }

dependencies {
    implementation("com.graphql-java:graphql-java:0.0.0-caching-query-parsing-and-validation-SNAPSHOT")
    implementation("com.github.ben-manes.caffeine:caffeine:3.1.8")
}

dependencies {
    implementation("com.graphql-java:graphql-java:0.0.0-caching-query-parsing-and-validation-SNAPSHOT")
}